I was trying to figure out how I would want to make one, but she wants a touch screen.. I had an idea, but before I get too deep into it, I wanted some advice, and/or validation that my idea could actually work.

Idea: take a touch screen laptop, (one where the Digitizer and LCD are not fused together) or purchase replacement part TS and LCD separately.Install one way mirror in between, and attach a RPi or Pine64

I have an OLD dell LCD that I am running in my server room as a monitor with an adapter running to VGA. Using something like these: http://www.ebay.com/bhp/laptop-lcd-converterAre there adapters for the digitizers to become USB output so I Can use it essentially universally?